(1) Full power or not?  Natural’s heaters are Full Power, for this, it is very easy to check, you just connect with the heaters with city power, then after 40 minutes later, when the power stable, then check the power display, you will see the true power for it. Natural are offering full power, but right now, market has half power, for example, on sticker write 100W, in fact, only have 50W, so on sticker is fake power.

(2) Plastic material for heater, Natural adapt new PA66 UL 94 V-0, some company adapt used material, for this, it is very easy, you just use fire to fire it, then smell, if it is smelly, this means the material is used material, another, to check the color of the products, used material color is dark and sometimes with black point on the products.

(3) Natural’s Heater adapt Shell fully oxidized, some company adapt half Shell fully oxidized, which will oxidize after some time.

(4) Natural’s heater is 100% high-pot testing by 1600V 3 seconds(UL requirement is 1200V 3 seconds), and function testing.  Each pc need to test.  For example, if you order 2000pcs, then we will test 2000times by hi-pot testing and 2000 times of function testing.  

(5) Another, for the terminal connector, we adapt is UL listed terminal connector, not normal type.